Here is the date declared as numeric variables: The "substr" function in SAS describes the position, the length and the name of a character variable. In the above syntax, the "substr" will ...

This appendix provides summary descriptions and syntax for selected SAS functions that can be used with the %SYSFUNC function. These functions are documented online.

Because %STR masks parentheses without a match, the macro processor does not recognize the arguments of a function or the parameter values of a macro invocation. For a description of quoting in SAS ...